Year % of GNI 1990 3.1985651727941495 1991 3.196464897009662 1992 2.447829788830468 1993 2.3539396211123784 1994 2.2217343200121635 1995 2.0762741075686653 1996 1.9678676005067692 1997 1.9074489792402414 1998 1.937723117805268 1999 1.8934543549005898 2000 1.900620880517012 2001 1.8995731363413317 2002 1.8828505046879753 2003 1.690354524484351 2004 1.5497843769882518 2005 1.4832407846770268 2006 1.4377578542218474 2007 1.4076500247193355 2008 2.3113770685310486 2009 2.0598552530025662 2010 1.9164837833459973 2011 1.751635365190479 2012 1.7097269314844223 2013 1.7341948146949313 2014 1.659799590083669 2015 1.5983297567126349 2016 1.5150790402787802 2017 1.4030678477819478 2018 1.3652410297266497 2019 1.3476903070797197 2020 1.3409936884013531 2021 1.4616654381091585